CN113659512A

CN113659512A - Power distribution device and bus electricity taking device

Info

Publication number: CN113659512A
Application number: CN202110874318.2A
Authority: CN
Inventors: 尹军平; 王会玖; 王俊夫; 余超; 成瀚
Original assignee: Gongniu Group Co Ltd
Current assignee: Gongniu Group Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-11-16

Abstract

The invention provides a power distribution device and a bus electricity taking device. The power distribution device includes: the power distribution shell is provided with an accommodating space, and the inner wall of the shell of the power distribution shell is provided with a plurality of mounting grooves; a plurality of distribution spare, distribution spare include insulation support frame and electrically conductive female copper bar, and insulation support frame detachably installs in the mounting groove, and insulation support frame has the installing zone, and electrically conductive female copper bar detachably sets up in the installing zone to realize that one step of assembly targets in place, electrically conductive female copper bar has the distribution groove, and the notch of distribution groove is towards the middle part of distribution shell. The bus electricity taking device solves the problem that in the prior art, a bus electricity taking device is high in processing cost.

Description

Power distribution device and bus electricity taking device

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a power distribution device and a bus electricity taking device.

Background

At present, the mainstream busless duct electricity taking mode in the market generally adopts a bus bar as an elastic structure, a jack box as a rigid insertion piece, or a complex mechanism drives the rigid insertion piece to contact with the bus bar and then take electricity. However, the elastic structure of the female copper bar with the structure needs the integral punch forming of the copper bar, the die is very large, the processing is difficult, and the processing cost is higher.

That is to say, the bus electricity taking device in the prior art has the problem of high processing cost.

Disclosure of Invention

The invention mainly aims to provide a power distribution device and a bus electricity taking device, and aims to solve the problem that the bus electricity taking device in the prior art is high in processing cost.

In order to achieve the above object, according to one aspect of the present invention, there is provided a power distribution apparatus including: the power distribution shell is provided with an accommodating space, and the inner wall of the shell of the power distribution shell is provided with a plurality of mounting grooves; a plurality of distribution spare, distribution spare include insulation support frame and electrically conductive female copper bar, and insulation support frame detachably installs in the mounting groove, and insulation support frame has the installing zone, and electrically conductive female copper bar detachably sets up in the installing zone to realize that one step of assembly targets in place, electrically conductive female copper bar has the distribution groove, and the notch of distribution groove is towards the middle part of distribution shell.

Further, the shell inner wall of distribution shell has the multiunit installation muscle that stretches out towards the middle part of distribution shell, lies in and forms the mounting groove between the two sets of adjacent installation muscle with one side.

Further, the inner wall of the mounting groove is provided with a plurality of supporting points along the direction from the groove bottom of the mounting groove to the notch, so that the mounting rib is in multi-point contact with the power distribution part.

Further, the inslot wall of mounting groove includes: the limiting rib is arranged close to the bottom of the mounting groove relative to the notch of the mounting groove and forms a first supporting point; the brace rod is located at the notch of the mounting groove and abutted to the power distribution piece, so that the groove wall of the mounting groove and the power distribution piece are arranged at intervals, and the brace rod forms a second supporting point.

Further, spacing muscle sets up with the tank bottom interval of mounting groove and forms spacing interval, and the outer peripheral face of distribution spare has spacing protruding edge, and spacing protruding edge stretches into in the spacing interval to with spacing muscle butt.

Further, spacing muscle is including the butt section and the crimping section that are the angle setting, and the butt section is on a parallel with the tank bottom and with spacing protruding along the butt, the outer peripheral face butt of crimping section and distribution spare.

Furthermore, the insulating support frame has the protruding edge of backstop towards the one end in the middle part of distribution shell, and electrically conductive female copper bar is spacing in the installing zone by the protruding edge of backstop.

Further, the distribution part also comprises an adjusting part, the adjusting part is arranged in the mounting area, and the adjusting part is close to the inner wall of the shell of the distribution shell relative to the conductive female copper bar so as to adapt to the conductive female copper bars with different lengths.

Furthermore, the insulating support frame and the conductive female copper bar are inserted into the mounting groove along the same direction.

Further, the thickness of the mounting ribs is consistent with the thickness of the inner wall of the housing.

Furthermore, distribution device still includes the ground connection piece, and the interior diapire of distribution shell has a plurality of fixed muscle that stretch out to the middle part of distribution shell, and two adjacent fixed muscle form the fixed position that is used for holding the ground connection piece.

According to another aspect of the invention, a bus bar electricity taking device is provided, which is characterized by comprising the above power distribution device.

Furthermore, the bus electricity taking device further comprises a plug box, the plug box is detachably connected with the power distribution device, and at least one part of the plug box can extend into a power distribution groove of the power distribution device.

Furthermore, the plug box comprises a box body and a power taking terminal, at least one part of the box body is accommodated in the accommodating space of the power distribution device, the power taking terminal is arranged on the box body, the bus power taking device has a power taking state and a power failure state, and when the bus power taking device is in the power failure state, the power taking terminal and the power distribution groove are arranged at intervals; when the bus electricity taking device is switched from a power-off state to an electricity taking state, the electricity taking terminal is gradually switched into the power distribution groove.

By applying the technical scheme of the invention, the power distribution device comprises a power distribution shell and a plurality of power distribution pieces, wherein the power distribution shell is provided with an accommodating space, and the inner wall of the shell of the power distribution shell is provided with a plurality of mounting grooves; the distribution part comprises an insulation support frame and a conductive female copper bar, the insulation support frame is detachably installed in the installation groove, the insulation support frame is provided with an installation area, the conductive female copper bar is detachably arranged in the installation area, one step of assembly is achieved, the conductive female copper bar is provided with a distribution groove, and a notch of the distribution groove faces to the middle of the distribution shell.

Through the form that sets up distribution shell and distribution spare for detachably is connected between distribution shell and the distribution spare, the distribution device's of being convenient for preparation, and this kind of detachably form only when distribution spare damages, can get off distribution spare dismantlement and maintain and change, and needn't change whole distribution device, has increased distribution device's life. The insulating support frame sets up between conductive female copper bar and distribution shell to keep apart conductive female copper bar and other structures, avoid the condition of electric leakage, reduced the potential safety hazard. The insulating support frame is located the outside of electrically conductive female copper bar, has set up a protective housing in the outside of electrically conductive female copper bar similarly. The insulating support frame is in multipoint contact with the mounting rib, and the insulating support frame is provided with a limiting convex edge. Distribution spare detachably sets up in the mounting groove for distribution spare is independent individual, is convenient for like this to distribution spare's preparation, has effectively saved distribution device's manufacturing cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a bus bar electricity taking device according to an alternative embodiment of the present invention; and

FIG. 2 is a schematic view of another angle of the bus bar electricity taking device in FIG. 1;

FIG. 3 shows an enlarged view at P in FIG. 2;

FIG. 4 is a schematic diagram of the power distribution apparatus of FIG. 1;

fig. 5 is a schematic structural view of the power distribution member of fig. 4.

Wherein the figures include the following reference numerals:

10. a power distribution housing; 11. an accommodating space; 12. installing ribs; 13. fixing the ribs; 20. a power distribution member; 21. a power distribution tank; 22. a limiting convex edge; 23. an insulating support frame; 231. an installation area; 232. a stop ledge; 24. a conductive mother copper bar; 241. a guide section; 25. an adjustment member; 30. mounting grooves; 31. limiting ribs; 311. an abutment section; 312. a crimping section; 32. supporting ribs; 33. spacing intervals; 40. a ground member; 50. a jack box; 51. a box body; 52. a power taking terminal; 60. and supporting the salient points.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem of high processing cost of a bus electricity taking device in the prior art, the invention mainly aims to provide a power distribution device and a bus electricity taking device.

As shown in fig. 1 to 5, the power distribution apparatus includes a power distribution case 10 and a plurality of power distribution pieces 20, the power distribution case 10 has an accommodating space 11, and a case inner wall of the power distribution case 10 has a plurality of mounting grooves 30; the power distribution piece 20 comprises an insulation support frame 23 and a conductive female copper bar 24, the insulation support frame 23 is detachably installed in the installation groove 30, the insulation support frame 23 is provided with an installation area 231, the conductive female copper bar 24 is detachably arranged in the installation area 231 to realize one-step assembly, the conductive female copper bar 24 is provided with a power distribution groove 21, and a notch of the power distribution groove 21 faces the middle part of the power distribution shell 10.

Through the form that sets up distribution shell 10 and distribution 20 for detachably connected between distribution shell 10 and the distribution 20, the preparation of the distribution device of being convenient for, and this kind of detachably form only when distribution 20 damages, can dismantle distribution 20 and get off to maintain and change, and needn't change whole distribution device, increased distribution device's life. The insulating support frame 23 is arranged between the conductive female copper bar 24 and the power distribution shell 10, so that the conductive female copper bar 24 is isolated from other structural parts, the electric leakage is avoided, and the potential safety hazard is reduced. The insulating support frame 23 is located on the outer side of the conductive busbar 24, and similarly, a protective shell is arranged on the outer side of the conductive busbar 24. The insulating support frame 23 is in multi-point contact with the mounting rib 12, and the insulating support frame 23 is provided with a limiting convex edge 22. Distribution member 20 detachably sets up in mounting groove 30 for distribution member 20 is independent individual, is convenient for like this to distribution member 20's preparation, has effectively saved distribution device's manufacturing cost.

The inner wall of the distribution shell 10 has a plurality of sets of mounting ribs 12 extending toward the middle of the distribution shell 10, and a mounting groove 30 is formed between two adjacent sets of mounting ribs 12 on the same side. The mounting groove 30 for mounting the electric element 20 is formed by arranging the mounting rib 12 on the inner wall of the shell, so that the power distribution shell 10 is light and thin, and meanwhile, the mounting rib 12 formed on the power distribution shell 10 is simple and convenient, and the production cost of the power distribution device is reduced.

As shown in fig. 1 and 4, the inner wall of the mounting groove 30 has a plurality of support points in a direction from the bottom of the mounting groove 30 to the opening of the slot, so that the mounting rib 12 is in multi-point contact with the power distribution member 20. Through setting up a plurality of strong points for installation muscle 12 can form the support to distribution 20 in a plurality of positions, so that installation muscle 12 carries out the stable support to distribution 20, guarantees the stability in distribution 20's position, with the stability of guaranteeing distribution 20 work. Meanwhile, the mounting ribs 12 and the power distribution part 20 are in multipoint contact, so that the weight of the power distribution shell 10 is reduced as much as possible while the mounting ribs 12 are used for stably supporting the power distribution part 20, and the power distribution device is light and thin.

As shown in fig. 3 and 4, the inner wall of the mounting groove 30 includes a limiting rib 31 and a supporting rib 32, the limiting rib 31 is disposed close to the bottom of the mounting groove 30 relative to the notch of the mounting groove 30, and the limiting rib 31 forms a first supporting point; the support rib 32 is located at the notch of the mounting groove 30, the support rib 32 abuts against the power distribution member 20, so that the groove wall of the mounting groove 30 and the power distribution member 20 are arranged at an interval, and the support rib 32 forms a second support point. Spacing muscle 31 is close to the tank bottom of mounting groove 30 for spacing muscle 31 can support and the centre gripping the distribution piece 20 that is close to the tank bottom, effectively avoids the slope of distribution piece 20, guarantees the stable work of distribution piece 20. And the support rib 32 is close to the notch of the mounting groove 30, so that the support rib 32 can clamp the position of the power distribution part 20 close to the notch, the power distribution part 20 is prevented from shaking or inclining, and the working stability of the power distribution part 20 is ensured. Through set up spacing muscle 31 and brace rod 32 on the inslot wall at mounting groove 30 to guarantee that distribution 20 stably sets up in mounting groove 30, avoid distribution 20 to deviate from in mounting groove 30, greatly increased distribution 20 job stabilization nature.

As shown in fig. 3, the limiting rib 31 and the groove bottom of the mounting groove 30 are spaced to form a limiting space 33, the outer peripheral surface of the power distribution member 20 has a limiting convex edge 22, and the limiting convex edge 22 extends into the limiting space 33 and abuts against the limiting rib 31. Spacing protruding edge 22 stretches into in spacing interval 33 for spacing muscle 31 can carry out the backstop to spacing protruding edge 22, avoids distributing part 20 to deviate from in the mounting groove 30, greatly increased distributing part 20 job stabilization nature.

As shown in fig. 4, the limiting rib 31 includes an abutting section 311 and a pressure welding section 312, which are disposed at an angle, the abutting section 311 is parallel to the groove bottom and abuts against the limiting convex edge 22, and the pressure welding section 312 abuts against the outer peripheral surface of the power distribution member 20. The abutting section 311 is parallel to the groove bottom and is arranged at an interval with the groove bottom, a limit interval 33 is formed between the abutting section 311 and the groove bottom, and the limit convex edge 22 abuts against the abutting section 311 to limit the power distribution member 20. The crimping section 312 abuts against the outer periphery of the power distribution member 20 to form a first supporting point, ensuring the position stability of the power distribution member. And the groove side wall of the mounting groove 30 in the spacing interval 33 has a certain interval with the spacing flange so as to facilitate the mounting of the power distribution member 20 into the mounting groove 30.

As shown in fig. 5, one end of the insulating support bracket 23 facing the middle of the power distribution shell 10 is provided with a stop flange 232, and the conductive female copper bar 24 is limited in the mounting area 231 by the stop flange 232. Through set up the protruding edge 232 of backstop on insulation support frame 23, can be spacing in the installation region 231 with electrically conductive female copper bar 24 to avoid electrically conductive female copper bar 24 to deviate from in the installation region 231, greatly increased electrically conductive female copper bar 24 job stabilization nature.

As shown in fig. 4 and 5, the power distribution member 20 further includes an adjustment member 25, the adjustment member 25 is disposed in the mounting region 231, and the adjustment member 25 is disposed close to the inner wall of the power distribution housing 10 relative to the conductive busbar 24 to adapt to the conductive busbar 24 with different lengths. By arranging the adjusting piece 25 on the power distribution device, the size of the insulation supporting frame 23 can be fixed, and then the conductive bus bars 24 and the adjusting piece 25 with different sizes can be adopted for adapting to different types of power distribution devices. Therefore, the size of the conductive mother copper bar 24 can be properly reduced to reduce the amount of copper, and the position of the conductive mother copper bar 24 is adjusted by the insulating adjusting piece 25. The arrangement makes the distribution shell 10 and the insulating support frame 23 universal, and the moulds of the distribution shell 10 and the insulating support frame 23 do not need to be manufactured again when the distribution grooves 21 with different depths are manufactured at each time, so that the manufacturing cost is greatly saved.

It should be noted that the power distribution case 10 and the power distribution member 20 are both long, and both ends in the length direction of the power distribution case 10 are open. The insulating support frame 23 and the conductive female copper bar 24 are inserted into the mounting groove 30 along the same direction. The insulating support frame 23, the conductive busbar 24 and the adjusting piece 25 are inserted into the mounting groove 30 from two ends of the distribution shell 10 in the length direction.

As shown in fig. 1 and 4, the thickness of the mounting ribs 12 corresponds to the thickness of the inner wall of the housing. Set up like this and make the everywhere thickness of distribution shell 10 the same for distribution shell 10 structural strength everywhere is the same, is favorable to installing muscle 12 to the centre gripping of distribution 20, has guaranteed the structural strength of installation muscle 12. Meanwhile, the arrangement facilitates the manufacture of the power distribution shell 10 and is beneficial to the lightening and thinning of the power distribution shell 10.

As shown in fig. 1 and 4, the power distribution apparatus further includes a ground member 40, the inner bottom wall of the power distribution case 10 has a plurality of fixing ribs 13 extending toward the middle of the power distribution case 10, and two adjacent fixing ribs 13 form fixing positions for accommodating the ground member 40. The setting of ground connection piece 40 can guarantee the security of distribution device in the use, and the setting of fixed muscle 13 can be fixed ground connection piece 40, avoids ground connection piece 40 to deviate from the fixed position to guarantee ground connection piece 40 steady operation.

As shown in fig. 1, the bus bar electricity taking device includes the above power distribution device. The bus electricity taking device with the power distribution device has the advantages of being light, thin, low in cost and convenient to assemble.

As shown in fig. 1, the bus bar electricity taking device further includes a jack box 50, the jack box 50 is detachably connected to the power distribution device, and at least a portion of the jack box 50 can extend into the power distribution groove 21 of the power distribution device. The jack box 50 can extend into the accommodating space 11, and the jack box 50 is rotated to change the contact state of the jack box 50 and the power distribution groove 21, when the jack box 50 rotates to the first position, at least one part of the jack box 50 is abutted against the power distribution groove 21, and at the moment, the jack box 50 gets electricity; when the jack box 50 rotates to the second position, the jack box 50 and the power distribution groove 21 are arranged at intervals, and at the moment, the jack box 50 does not take power.

As shown in fig. 1, the jack box 50 includes a box body 51 and a power taking terminal 52, at least a portion of the box body 51 is accommodated in the accommodating space 11 of the power distribution device, the power taking terminal 52 is disposed on the box body 51, the bus power taking device has a power taking state and a power failure state, and when the bus power taking device is in the power failure state, the power taking terminal 52 and the power distribution groove 21 are disposed at an interval; when the bus bar electricity taking device is switched from the power-off state to the electricity taking state, the electricity taking terminal 52 gradually turns into the power distribution groove 21. Note that the jack box 50 rotates to slide the power taking terminal 52 into or out of the power distribution groove 21.

The plugging box 50 is inserted into the accommodating space 11, and the grounding copper column on the plugging box is firstly contacted with the grounding piece 40, so that the grounding is firstly contacted. After the jack box 50 rotates by 90 degrees, the electricity taking terminal 52 passes through a guide structure of the jack box, meanwhile, the conductive female copper bar 24 is provided with a guide section 241 on the inner wall surface of the opening to be screwed into the distribution groove 21 of the conductive female copper bar 24, the conductive female copper bar 24 is compressed to obtain the electricity taking terminal 52, and the contact stability of the electricity taking terminal 52 and the female copper bar is ensured.

As shown in fig. 5, the inner side wall of the insulating support frame 23 has a plurality of supporting salient points 60, and the supporting salient points 60 are abutted to the conductive female copper bar 24, so that the conductive female copper bar 24 and the insulating support frame 23 are supported at multiple points, and the stability of connection between the conductive female copper bar 24 and the insulating support frame 23 is ensured. Because the conductive female copper bar 24 is inserted into the mounting region 231 of the insulation support frame 23 from one side, the friction force generated when the conductive female copper bar 24 is inserted into the mounting region 231 can be reduced by the multi-point supporting mode between the conductive female copper bar 24 and the insulation support frame 23, and the conductive female copper bar 24 can be conveniently assembled into the mounting region 231.

It should be noted that, the insulating support frame 23 and the conductive female copper bar 24 are both long, and during assembly, the insulating support frame 23 is inserted into the mounting groove 30 from one side, and the conductive female copper bar is also inserted into the mounting region 231 from the same side.

In addition, the outer side wall of the adjusting part 25 is also provided with a plurality of supporting salient points 60, so that the adjusting part 25 and the insulating support frame 23 are supported in a multi-point manner, and the stability of connection between the adjusting part 25 and the insulating support frame 23 is ensured.

In the embodiment shown in fig. 5, the inner wall surface of the conductive female copper bar 24 at the opening has a guiding section 241, so as to facilitate the insertion of the power-taking terminal 52 into the power distribution slot 21.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical distribution apparatus, comprising:

the power distribution shell (10), the power distribution shell (10) is provided with an accommodating space (11), and the shell inner wall of the power distribution shell (10) is provided with a plurality of mounting grooves (30);

a plurality of distribution spare (20), distribution spare (20) are including insulating support frame (23) and female copper bar of electricity conduction (24), insulating support frame (23) detachably installs in mounting groove (30), insulating support frame (23) have installation region (231), female copper bar of electricity conduction (24) detachably sets up in installation region (231) to realize that one step of assembly targets in place, female copper bar of electricity conduction (24) have distribution groove (21), the notch orientation of distribution groove (21) the middle part of distribution shell (10).

2. The electrical distribution apparatus according to claim 1, wherein the inner shell wall of the electrical distribution shell (10) has a plurality of sets of mounting ribs (12) protruding toward the middle of the electrical distribution shell (10), and the mounting grooves (30) are formed between two adjacent sets of the mounting ribs (12) located on the same side.

3. The electrical distribution device according to claim 2, wherein the inner wall of the mounting groove (30) has a plurality of support points in a direction from the bottom of the mounting groove (30) to the opening of the slot, so that the mounting rib (12) is in multi-point contact with the electrical distribution member (20).

4. The electrical distribution device according to claim 1, wherein the inner wall of the installation groove (30) comprises:

the limiting rib (31) is arranged close to the bottom of the mounting groove (30) relative to the notch of the mounting groove (30), and the limiting rib (31) forms a first supporting point;

the support rib (32) is located at the groove opening of the mounting groove (30), the support rib (32) is abutted to the power distribution piece (20) so that the groove wall of the mounting groove (30) and the power distribution piece (20) are arranged at intervals, and the support rib (32) forms a second support point.

5. The power distribution device according to claim 4, wherein the limiting rib (31) is spaced from the bottom of the mounting groove (30) to form a limiting space (33), the peripheral surface of the power distribution member (20) has a limiting convex edge (22), and the limiting convex edge (22) extends into the limiting space (33) and abuts against the limiting rib (31).

6. The electrical distribution device according to claim 5, wherein the limiting rib (31) comprises an abutting section (311) and a crimping section (312) which are arranged in an angle, the abutting section (311) is parallel to the groove bottom and abuts against the limiting convex edge (22), and the crimping section (312) abuts against the outer peripheral surface of the electrical distribution member (20).

7. The electrical distribution device according to any one of claims 1 to 6, wherein an end of the insulating support frame (23) facing the middle of the distribution housing (10) has a stop ledge (232), and the busbar (24) is retained in the mounting region (231) by the stop ledge (232).

8. The electrical distribution device according to any one of claims 1 to 6, wherein the electrical distribution member (20) further comprises an adjustment member (25), the adjustment member (25) being within the mounting region (231), the adjustment member (25) being close to the inner shell wall of the electrical distribution shell (10) with respect to the busbar (24) to adapt to different lengths of the busbar (24).

9. The electrical distribution device according to any one of claims 1 to 6, wherein the insulating support frame (23) and the conductive busbar (24) are inserted into the mounting groove (30) in the same direction.

10. An electrical distribution device according to claim 2, characterized in that the thickness of the mounting ribs (12) corresponds to the thickness of the inner wall of the housing.

11. The electrical distribution device according to any one of claims 1 to 6, further comprising a ground contact (40), wherein the inner bottom wall of the distribution casing (10) has a plurality of fixing ribs (13) protruding towards the middle of the distribution casing (10), and two adjacent fixing ribs (13) form fixing positions for accommodating the ground contact (40).

12. A bus bar electricity taking device comprising the power distribution device according to any one of claims 1 to 11.

13. The bus bar electricity take-off device according to claim 12, further comprising a junction box (50), wherein the junction box (50) is detachably connected to the power distribution device, and at least a portion of the junction box (50) is capable of extending into a power distribution groove (21) of the power distribution device.

14. The bus bar electricity taking device according to claim 13, wherein the plug box (50) comprises a box body (51) and an electricity taking terminal (52), at least a part of the box body (51) is accommodated in the accommodating space (11) of the power distribution device, the electricity taking terminal (52) is arranged on the box body (51), the bus bar electricity taking device has an electricity taking state and an electricity cutting state,

when the bus electricity taking device is in a power-off state, the electricity taking terminal (52) and the power distribution groove (21) are arranged at intervals;

when the bus electricity taking device is switched from the power-off state to the electricity taking state, the electricity taking terminal (52) gradually turns into the power distribution groove (21).